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wx.WithImages¶

A mixin class to be used with other classes that use a wx.ImageList.

This class is used by classes such as wx.Notebook and wx.TreeCtrl, that use image indices to specify the icons used for their items (page icons for the former or the items inside the control for the latter).

The icon index can either be a special value wx.NO_IMAGE to indicate that an item doesn’t use an image at all or a small positive integer to specify the index of the icon in the list of images maintained by this class. Note that for many controls, either none of the items should have an icon or all of them should have one, i.e. mixing the items with and without an icon doesn’t always work well and may result in less than ideal appearance.

To initialize the list of icons used, call SetImages method passing it a vector of wx.BitmapBundle objects which can, in the simplest case, be just wx.Bitmap or wx.Icon objects – however, as always with wx.BitmapBundle, either more than one bitmap or icon needs to be specified or the bitmap bundle needs to be created from SVG to obtain better appearance in high DPI.

Alternative, traditional API which was the only one available until wxWidgets 3.1.6, is based on the use of wx.ImageList class. To use it, you need to create an object of this class and then call either AssignImageList to set this image list and give the control its ownership or SetImageList to retain the ownership of the image list, which can be useful if the same image list is shared by multiple controls, but requires deleting the image list later.

Note

ImageList-based API is not formally deprecated, but its use is discouraged because it is more complicated than simply providing a vector of bitmaps and it doesn’t allow specifying multiple images or using SVG, which is required for good high DPI support. Please don’t use AssignImageList and SetImageList in the new code and use SetImages instead.

Class Hierarchy¶

Inheritance diagram for class WithImages:

Known Subclasses¶

wx.BookCtrlBase, wx.TreeCtrl

Methods Summary¶

`__init__`
`AssignImageList`	Sets the image list for the page control and takes ownership of the list.
`GetImageCount`	Return the number of images in this control.
`GetImageList`	Returns the associated image list, may be nullptr.
`GetUpdatedImageListFor`	Returns the image list updated to reflect the `DPI` scaling used for the given window if possible.
`HasImages`	Return `True` if the control has any images associated with it.
`SetImageList`	Sets the image list to use.
`SetImages`	Set the images to use for the items in the control.

Properties Summary¶

`ImageCount`	See `GetImageCount`
`ImageList`	See `GetImageList` and `SetImageList`

Class API¶

class wx.WithImages(object)¶

Possible constructors:

WithImages() -> None

A mixin class to be used with other classes that use a ImageList.

Methods¶

__init__(self)¶

Return type:: None

AssignImageList(self, imageList)¶

Sets the image list for the page control and takes ownership of the list.

This function exists for compatibility only, please use SetImages in the new code.

Parameters:: imageList (wx.ImageList)
Return type:: None

See also

wx.ImageList, SetImageList

GetImageCount(self)¶

Return the number of images in this control.

The returned value may be 0 if there are no images associated with the control.

Return type:: int

Added in version 4.1/wxWidgets-3.1.6.

See also

HasImages

GetImageList(self)¶

Returns the associated image list, may be nullptr.

Note that the new code should use GetUpdatedImageListFor instead.

Return type:: wx.ImageList

See also

wx.ImageList, SetImageList

GetUpdatedImageListFor(self, win)¶

Returns the image list updated to reflect the DPI scaling used for the given window if possible.

If SetImages has been called, this function creates the image list containing the images using the DPI scaling in effect for the provided win, which must be valid.

Otherwise it behaves as GetImageList , i.e. returns the image list previously set using SetImageList or AssignImageList , and just returns nullptr if none of them had been called.

Parameters:: win (wx.Window)
Return type:: wx.ImageList
Returns:: Possibly null pointer owned by this object, i.e. which must not be deleted by the caller.

Added in version 4.1/wxWidgets-3.1.6.

HasImages(self)¶

Return True if the control has any images associated with it.

Return type:: bool

Added in version 4.1/wxWidgets-3.1.6.

See also

GetImageCount

SetImageList(self, imageList)¶

Sets the image list to use.

It does not take ownership of the image list, you must delete it yourself.

This function exists for compatibility only, please use SetImages in the new code.

Parameters:: imageList (wx.ImageList)
Return type:: None

See also

wx.ImageList, AssignImageList

SetImages(self, images)¶

Set the images to use for the items in the control.

This function allows to specify the images to use in multiple different resolutions, letting the control to select the appropriate one for its DPI scaling. For this reason, it should be preferred to using the functions taking wx.ImageList, which has a fixed size, in the new code.

Parameters:: images (Vector) – Non empty vector of bitmap bundles. Valid image indexes for the items in this control are determined by the size of this vector.
Return type:: None

Added in version 4.1/wxWidgets-3.1.6.

Properties¶

ImageCount¶: See GetImageCount

ImageList¶: See GetImageList and SetImageList

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